mattboy:
About the "learn in cold water to make it easier to dive in warm water" theory, IMO it's a little backwards. In most skill-learning situations you start with the easy stuff and progress to more difficult. Learning to dive should be no different.
I disagree with you on this one mattboy.....
Back in the day when I was getting ready to learn how to drive, I wanted to learn how to on my dad's automatic car (since it'd be easier) and he refused. He said "You need to learn to drive stick from the start, that way you can drive any car in the world." I was not a happy camper, but I learned on a 5-spd Cherokee, grinding my way around, killing the clutch (this was my folks oldest car, so it was a beater), and I *hated* hill starts with a passion. But now 15 years later, I really appreciate that lesson as I *can* drive any car in the world and since I like to travel and rent cars when I go somewhere, I never worry about what I'm going to find car-wise.
I also think driving stick makes you a better driver because you have a better understanding of whats going on w/ the vehicle and you have much better control of the vehicle since you can use the clutch and stick to gear up or down as needed (including to pull some evasive manuevers that you can't do with an auto)
A lot of people I know that learned how to drive on an automatic have never bothered to learn stick because they got into the habit of the auto transmission.
I think the same applies to scuba diving... If a diver lives in a cold diving location (like me, here in New England) and they really want to learn how to dive and get proficient, the only way is by diving as much as possible - which for most means diving locally. Yeah, its a b---h at first getting used to the cold and the extra layers of coverage you need to deal with it, and the viz is around 15'-25' and you think "Why am I doing this?" (at least I did), but then you get used to it and you get comfortable and you start liking it (I swore I never would, but I did). Now I feel when I head down to the Caribbean for a vacation and I go diving, that I'm going to have fewer problems than others who only dive warm because (1) the added viz and warmth will seem like child's play and (2) i probably will have dove a lot more often than the other "coldies" who only dive once or twice a year on vacation..
The only way to be a better diver (I believe) is to dive. Considering we're strapping life support on our backs, wouldn't you want to be as good at it as you can be? Maybe not... Maybe its just a passing hobby or something that doesnt go past novelty status and you're comfortable with just a handful of warm dives a year.. That's up to you..